# -*- coding: utf-8 -*-

# Scrapy settings for lianjia_redis project
#
# For simplicity, this file contains only settings considered important or
# commonly used. You can find more settings consulting the documentation:
#
#     https://doc.scrapy.org/en/latest/topics/settings.html
#     https://doc.scrapy.org/en/latest/topics/downloader-middleware.html
#     https://doc.scrapy.org/en/latest/topics/spider-middleware.html

BOT_NAME = 'lianjia_redis'

SPIDER_MODULES = ['lianjia_redis.spiders']
NEWSPIDER_MODULE = 'lianjia_redis.spiders'


# Crawl responsibly by identifying yourself (and your website) on the user-agent
# USER_AGENT = 'lianjia_redis (+http://www.yourdomain.com)'
USER_AGENT = 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36'


# Obey robots.txt rules
ROBOTSTXT_OBEY = False

# mongodb server
MONGO_URI = 'mongodb://192.168.1.59:27017'
MONGO_DB = 'lianjia'

# ElasticSearch Connection
ES_NODE = '192.168.1.59:9200'
ES_INDEX = 'lianjia.ershoufang.sell'
ES_TYPE = 'info'

# 指定redis主机
# REDIS_HOST='140.143.237.148'
# REDIS_PORT=6379
REDIS_URL='redis://192.168.1.59:6379/2'

# 使用scrapy-redis里面的去重组件.
DUPEFILTER_CLASS = "scrapy_redis.dupefilter.RFPDupeFilter"
# 使用scrapy-redis里面的调度器
SCHEDULER = "scrapy_redis.scheduler.Scheduler"
# 允许暂停后,能保存进度
SCHEDULER_PERSIST = True

# 指定排序爬取地址时使用的队列，
# 默认的 按优先级排序(Scrapy默认)，由sorted set实现的一种非FIFO、LIFO方式。
SCHEDULER_QUEUE_CLASS = 'scrapy_redis.queue.SpiderPriorityQueue'
# 可选的 按先进先出排序（FIFO）
# SCHEDULER_QUEUE_CLASS = 'scrapy_redis.queue.SpiderQueue'
# 可选的 按后进先出排序（LIFO）
# SCHEDULER_QUEUE_CLASS = 'scrapy_redis.queue.SpiderStack'


# Configure maximum concurrent requests performed by Scrapy (default: 16)
# CONCURRENT_REQUESTS = 32

# Configure a delay for requests for the same website (default: 0)
# See https://doc.scrapy.org/en/latest/topics/settings.html#download-delay
# See also autothrottle settings and docs
# DOWNLOAD_DELAY = 3
# The download delay setting will honor only one of:
# CONCURRENT_REQUESTS_PER_DOMAIN = 16
# CONCURRENT_REQUESTS_PER_IP = 16

# Disable cookies (enabled by default)
# COOKIES_ENABLED = False

# Disable Telnet Console (enabled by default)
# TELNETCONSOLE_ENABLED = False

# Override the default request headers:
DEFAULT_REQUEST_HEADERS = {
   'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8',
   'Accept-Encoding': 'gzip, deflate, br',
   'Accept-Language': 'zh-CN,zh;q=0.9',
   'Cache-Control': 'max-age=0',
   'Connection': 'keep-alive',
   'Upgrade-Insecure-Requests': 1,
   'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.99 Safari/537.36',
}

# Enable or disable spider middlewares
# See https://doc.scrapy.org/en/latest/topics/spider-middleware.html
# SPIDER_MIDDLEWARES = {
#    'lianjia_redis.middlewares.LianjiaRedisSpiderMiddleware': 543,
#}

# Enable or disable downloader middlewares
# See https://doc.scrapy.org/en/latest/topics/downloader-middleware.html
DOWNLOADER_MIDDLEWARES = {
   'lianjia_redis.middlewares.FilterMiddleware': 543,
   #  'lianjia_redis.middlewares.RandomUserAgentDownloaderMiddleware': 500,
}

# Enable or disable extensions
# See https://doc.scrapy.org/en/latest/topics/extensions.html
# EXTENSIONS = {
#    'scrapy.extensions.telnet.TelnetConsole': None,
#}

# Configure item pipelines
# See https://doc.scrapy.org/en/latest/topics/item-pipeline.html
ITEM_PIPELINES = {
    'lianjia_redis.pipelines.SellPipeline': 300,
    'lianjia_redis.pipelines.MongoPipeline': 350,
    'lianjia_redis.pipelines.ElasticSearchPipeline': 350,
    # 'scrapy_redis.pipelines.RedisPipeline': 400,
}

# Enable and Configure log
LOG_LEVEL = 'INFO'

# Enable and configure the AutoThrottle extension (disabled by default)
# See https://doc.scrapy.org/en/latest/topics/autothrottle.html
# AUTOTHROTTLE_ENABLED = True
# The initial download delay
# AUTOTHROTTLE_START_DELAY = 5
# The maximum download delay to be set in case of high latencies
# AUTOTHROTTLE_MAX_DELAY = 60
# The average number of requests Scrapy should be sending in parallel to
# each remote server
# AUTOTHROTTLE_TARGET_CONCURRENCY = 1.0
# Enable showing throttling stats for every response received:
# AUTOTHROTTLE_DEBUG = False

# Enable and configure HTTP caching (disabled by default)
# See https://doc.scrapy.org/en/latest/topics/downloader-middleware.html#httpcache-middleware-settings
# HTTPCACHE_ENABLED = True
# HTTPCACHE_EXPIRATION_SECS = 0
# HTTPCACHE_DIR = 'httpcache'
# HTTPCACHE_IGNORE_HTTP_CODES = []
# HTTPCACHE_STORAGE = 'scrapy.extensions.httpcache.FilesystemCacheStorage'
